ankle vs foot it

ankle

verb
  • To walk. 

  • To cyclically angle the foot at the ankle while pedaling, to maximize the amount of work applied to the pedal during each revolution. 

noun
  • The skeletal joint which connects the foot with the leg; the uppermost portion of the foot and lowermost portion of the leg, which contain this skeletal joint. 

foot it

verb
  • To walk. 

  • To dance. 

How often have the words ankle and foot it occurred in a corpus of books? (source: Google Ngram Viewer )